|
| From: | Rik |
| Subject: | [Octave-bug-tracker] [bug #43349] asin behaves differently from Matlab for arguments larger than 1 |
| Date: | Mon, 06 Oct 2014 16:53:08 +0000 |
| User-agent: | Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:32.0) Gecko/20100101 Firefox/32.0 |
Follow-up Comment #6, bug #43349 (project octave):
Actually, something else must be going on. Direct calculation within Octave
of the expression used in the calculation
-i * log (i*x + sqrt (1.0 - x*x))
produces the correct answer
octave:9> -i * log (2i + sqrt (-3))
ans = 1.5708 - 1.3170i
octave:10> -i * log (-2i + sqrt (-3))
ans = -1.5708 + 1.3170i
So after calculation, as it is passed back to the Octave interpreter something
is flipping the sign bit.
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